Find a pro
Find a licensed window and door installer on Long Island
What window and door installers do
A window and door installer replaces windows, entry doors, patio doors and storm doors, from the frame and flashing to the trim inside and out.
- Drafty, foggy or hard-to-open windows.
- A door that sticks, leaks air or does not lock well.
- A remodel or an addition that changes openings.
Who licenses window and door installers on Long Island
- A window or door project that disturbs lead paint in a home built before 1978 must be done by a lead-safe certified contractor, the state Health Department says of the EPA rule.
- Putties, caulks, paints and cements appear on the state Department of Labor's list of building materials that might contain asbestos.
- New York's General Business Law lists the replacement or improvement of windows as home improvement in section 770.
Suffolk County
- New windows and doors are an improvement to residential property, and Suffolk's home improvement law requires a county license for that work unless the business is exempt.
- Storms and screens are among the areas of work Suffolk Consumer Affairs lists under home improvement.
Nassau County
- On Nassau's home improvement licensing list, doors, windows and awnings share one entry.
- Nassau's Administrative Code names windows in its home improvement definition, and the county bars anyone from running a home improvement business without a license.
- A window or door contractor's RRP lead certificate counts with Nassau Consumer Affairs only if it was issued by an EPA-accredited training program under 40 CFR Part 745.225.
Step by step: how to check a window and door installer's license in Suffolk or Nassau.
Town by town
Each town page quotes that town's own rules for window and door replacement, with the date we read them.
| Town or city | County | What the town says |
|---|---|---|
| City of Glen Cove | Nassau County | Glen Cove requires a permit for siding and replacement windows. |
| Town of Southampton | Suffolk County | In Southampton, a cracked window is not automatically a property maintenance code violation. |
What it costs
Labor is a large part of any price. Long Island glaziers earn a median $63,302 a year, from about $51,418 at entry level to $84,282 with experience. Carpenters earn a median $78,841 a year, from about $54,732 at entry level to $97,440 with experience. (New York State Department of Labor, wages updated to the first quarter of 2026.)
Window and door prices turn on the number and size of openings, full-frame or insert installation, the material and glass, and any trim or siding repair. See the windows and doors cost guide.
What to ask before you hire
- Your county license number, so I can check it before I sign?
- A certificate of insurance sent to me by your insurer, not a photo?
- Is this a full-frame replacement or an insert into the old frame?
- How will the openings be flashed and sealed against water?
- Does the job need a permit, for example if openings change size?
- For a house built before 1978: are you certified for lead-safe work?
How Revival helps
Request a free call. Revival goes over the job and the permit with you, checks licenses and insurance, and introduces up to two vetted, licensed window and door installers as they join our network. You choose who to hire, and you never pay Revival.
Window and Door Installers by town
- Windows and doors in Glen Cove (Nassau County)
- Windows and doors in Southampton (Suffolk County)
Guides
Questions homeowners ask
Do I need a permit to replace windows on Long Island?
It depends on the town and on whether openings change. The town pages below quote what each town's own pages say.
Does a window installer need a license on Long Island?
Window and door replacement is home improvement work, so the county home improvement license applies in Nassau and in Suffolk.
How does Revival help with windows and doors?
A free call to pin down the openings and the goals, then introductions to licensed installers as they join our network.
Sources
Every fact on this page comes from these official pages. Rules and fees change, so confirm with the office before you file anything.
- NYS Department of Health, Lead-Safe Renovation, Repair, and Painting (read 2026-11-03)
- NYS Department of Labor, asbestos survey requirements for building permit applicants (P231) (read 2026-11-03; page dated 1/26)
- New York State Senate, General Business Law section 770 (home improvement contract definitions) (read 2026-11-03; page dated revision of 2020-05-29)
- Suffolk County Consumer Affairs, Home Improvement License Law (PDF) (read 2026-11-03; page dated 5/25)
- Suffolk County Consumer Affairs, Licensing and Enforcement (read 2026-11-03)
- Nassau County Consumer Affairs, Who Must Be Licensed? (read 2026-11-03)
- Nassau County, Administrative Code (PDF) (read 2026-11-03; page dated January 1, 2026)
- Nassau County, Department of Consumer Affairs (read 2026-11-03)
- City of Glen Cove, Building Department, and the documents it links: Building Permit Application, Building Permit Application Checklist (rev 11/2020) and Fee Schedule (As Amended 12/23/2024; linked as Effective 03/18/25) (read 2026-11-03)
- Town of Southampton, Code Enforcement Policies (read 2026-11-03)
- New York State Department of Labor, Occupational Wages (Long Island region, wages updated to the first quarter of 2026) (read 2026-11-03)
Checked 2026-11-03. Facts come only from the official pages listed, read on that date.
Talk the job through before you call anyone
Tell us about the house and the job in about four minutes. Revival calls you, free, to go over the scope, the budget, the timing and your town's permit office. Contractor matches open as our first licensed partners sign.